The OS81118 is a single network port Intelligent Network Interface Controller
(INIC) for the 150 Mbps INICnet Network with support for both optical physical
layers (oPHY) and coaxial (coax) physical layers (cPHY) that can efficiently
handle audio, video, packet, and control data for infotainment and Advanced
Driver Assistance Systems (ADAS).

The cPHY supports point-to-point connections
with full-duplex communication, reducing system costs through the reduced
number of cables and connectors that are necessary to connect the single
devices. The OS81118 can be used with
the OS81119 to form a daisy-chain network topology. The classic ring topology
with dual-simplex communication is supported by oPHY and cPHY.

Microchip’s Unified Centralized Network Stack (UNICENS) supports establishing of all network
connected data resources from one point in the network, enabling simple, yet
full featured network connections. Software support for interfacing to the
INIC’s data I/O ports in Linux applications is provided by the native driver included
in Automotive Grade Linux. A QNX driver for the USB interface is available. For MOST implementations, a variety of software support is available.

INICs encapsulate all low-level
network-management functions relieving the External Host Controller (EHC) from
the burden of managing real-time network tasks. INICs monitor and manage a
variety of network conditions to support robust network functionality and fault
detection and recovery. A built-in watchdog protects the network from EHC
faults. INIC protection mode prevents application malfunctions from influencing
the integrity of the network and the system. INICs also provide support for
device power management.

Remote control functionality is supported
obviating the need for an EHC in certain “slim” applications. The INIC can be
fully configured and managed through the network. Peripheral components can be
configured / monitored via I2C tunneling.

Optionally IP-based system management can be supported via the Ethernet packet
channel providing seamless integration of the multimedia network with Ethernet
networking in other vehicle domains.